Spatial Variations of Soil Respiration in Arid Ecosystems

Liu, Gang; Sonobe, Rei; Wang, Quan

doi:10.4236/oje.2016.64020

Cited by 4 publications

(1 citation statement)

References 45 publications

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“…The leaf nutrient variability was located mainly at the local scale-suggesting that it is affected by tree-level factors such as soil moisture content, soil pH, genetic variability, or leaf traits, instead of regional factors like climatic conditions (Salazar et al 2018b). The patchy vegetation cover and high spatial variation of soil processes such as respiration and leaf litter decomposition can increase local-scale variability (Puigdefábregas 2005;Liu et al 2016). In tropical dry forests, the tree effect on the ecosystem is referred to as the Prosopis fertility island effect, which increases soil nutrients and changes soil chemical attributes (Abril et al 2009;.…”

Section: Leaf Nutrient Variability Explained At a Local Scalementioning

confidence: 99%

Leaf nutrients in Prosopis pallida are determined by soil chemical attributes under eutric conditions in a dryland forest

Salazar

Navarro-Cerrillo

Grados

et al. 2020

Trees

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Key message Soil pH, EC, and salinity explain the leaf nutrient concentrations of Prosopis pallida despite the high amount of soil nutrients near the trees. Abstract Dryland forests constantly face extreme abiotic conditions, and this affects plant growth and nutrition. We have determined the effects of soil chemical attributes and soil nutrients on the leaf nutrient concentrations of eight Prosopis pallida populations located along a climatic gradient in the North-Peruvian dryland forests. We analyzed the leaf chemical composition (N, P, K, Ca, Mg, Fe, Mn, Cu, and Zn), as well as soil chemical attributes [texture, pH, salinity (electrical conductivity; EC), and the sodium adsorption ratio (SAR)] and soil nutrient concentrations (the same elements as in the leaves) at 2 m from the base of each tree. The soil and leaf nutrient concentrations were not associated with the climatic gradient and were highly variable within populations. Despite the dry conditions, the soil nutrients were not a limiting resource (eutric conditions), and thus the soil chemical attributes were the main driver of the variation in leaf nutrient concentrations. Interestingly, leaf Mn was correlated with soil and leaf nutrients, as well as with soil chemical attributes, suggesting it can be used as an early indicator of plant nutrition.

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Section: Leaf Nutrient Variability Explained At a Local Scalementioning

confidence: 99%

Leaf nutrients in Prosopis pallida are determined by soil chemical attributes under eutric conditions in a dryland forest

Salazar

Navarro-Cerrillo

Grados

et al. 2020

Trees

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Changes in soil respiration after application of in situ soil amendment and phosphate fertilizer under soybean cultivation at Ultisol South Lampung, Indonesia

Yusnaini

Niswati

Aini

et al. 2021

IOP Conf. Ser.: Earth Environ. Sci.

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Several inputs are needed to increase the production of soybean in Ultisol. The Application of organic soil amendment will increase carbon, nutrients, and water stored in the soil. Besides, the soil structure becomes stable so that plants will be more tolerant of climate change. The higher organic C in the soil, the more fertile soils, the plants grow healthier and fertile, and then the emission of CO2 gas into the air can be suppressed. Therefore, this study aims to determine soil respiration (CO2) due to the application of in situ soil amendment and phosphate fertilizer. This research was conducted at the research station of BPTP Natar, South Lampung, from July to November 2019, arranged with random complete block design in two factorials. The first factor is the source of phosphate fertilizer is without P fertilizer, TSP fertilizer 200 kg ha-1, and rock phosphate 5 tons ha-1, and the second factor is the application of soil in situ amendments. i.e.: without the soil amendment, rice husk biochar 5 tons ha-1 (B1), organonitrofos compost 10 tons ha-1, and cow dung manure 10 tons ha-1. All experimental units were fertilized with urea at a dose of 50 kg ha-1 and KCl at a dose of 200 kg ha-1. The result showed that the highest soil respiration was obtained in the plot treated with rock phosphate and cow dung manure at the single factor. The combination of rock phosphate and cow dung manure resulted in the highest of soil respiration.

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The Relationship between Soil Respiration and Plant Community Functional Traits in Ebinur Lake Basin

Sheng

Wang

et al. 2022

Agronomy

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Soil respiration (Rs) plays an important role in the carbon cycle of terrestrial ecosystems. Understanding the impacts of plant community functional traits on Rs is a key prerequisite for accurate prediction of the future carbon balance of terrestrial ecosystems under climate change. This study examined the relationship of Rs with plants in the Ebinur Lake Basin in the arid desert region. Traditional statistical methods and geostatistical methods were used to study the spatial variation characteristics of Rs and to analyze the effects of plant community functional traits and environmental factors on the spatial heterogeneity of Rs. The variation in Rs in the arid desert area of the Ebinur Lake Basin showed a strong spatial dependence (C0/(C + C0) = 0.11) and a medium variation (α = 25.50, CV = 86.21%). Principal component analysis revealed that morphological traits of plants and soil water content had great contributions to PC1, soil nutrient had great contributions to PC2, and physiological traits of plants and soil temperature had large contributions to PC3. Multiple regression analysis showed that PC1, PC2, and PC3 can explain 83% of the spatial heterogeneity of Rs (F = 157.41, p < 0.01). In conclusion, maximum height, leaf width, leaf dry matter content, leaf thickness, and soil water content were the principal driving elements of soil respiration heterogeneity.

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Spatial Variations of Soil Respiration in Arid Ecosystems

Cited by 4 publications

References 45 publications

Leaf nutrients in Prosopis pallida are determined by soil chemical attributes under eutric conditions in a dryland forest

Leaf nutrients in Prosopis pallida are determined by soil chemical attributes under eutric conditions in a dryland forest

Changes in soil respiration after application of in situ soil amendment and phosphate fertilizer under soybean cultivation at Ultisol South Lampung, Indonesia

The Relationship between Soil Respiration and Plant Community Functional Traits in Ebinur Lake Basin

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